Re: [PATCH bpf-next 2/5] libbpf: check the kflag of type tags in btf_dump

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On 22/01/2025 02:53, Ihor Solodrai wrote:
> If the kflag is set for a BTF type tag, then the tag represents an
> arbitrary __attribute__. Change btf_dump accordingly.
> 
> Signed-off-by: Ihor Solodrai <ihor.solodrai@xxxxx>

Reviewed-by: Alan Maguire <alan.maguire@xxxxxxxxxx>

> ---
>  tools/lib/bpf/btf_dump.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/lib/bpf/btf_dump.c b/tools/lib/bpf/btf_dump.c
> index a3fc6908f6c9..460c3e57fadb 100644
> --- a/tools/lib/bpf/btf_dump.c
> +++ b/tools/lib/bpf/btf_dump.c
> @@ -1494,7 +1494,10 @@ static void btf_dump_emit_type_chain(struct btf_dump *d,
>  		case BTF_KIND_TYPE_TAG:
>  			btf_dump_emit_mods(d, decls);
>  			name = btf_name_of(d, t->name_off);
> -			btf_dump_printf(d, " __attribute__((btf_type_tag(\"%s\")))", name);
> +			if (btf_kflag(t))
> +				btf_dump_printf(d, " __attribute__((%s))", name);
> +			else
> +				btf_dump_printf(d, " __attribute__((btf_type_tag(\"%s\")))", name);
>  			break;
>  		case BTF_KIND_ARRAY: {
>  			const struct btf_array *a = btf_array(t);





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